JPH04232246A - Method and composition for protecting alpha-aluminide alloy sample to be exposed to high temperature oxidation - Google Patents
Method and composition for protecting alpha-aluminide alloy sample to be exposed to high temperature oxidationInfo
- Publication number
- JPH04232246A JPH04232246A JP3186200A JP18620091A JPH04232246A JP H04232246 A JPH04232246 A JP H04232246A JP 3186200 A JP3186200 A JP 3186200A JP 18620091 A JP18620091 A JP 18620091A JP H04232246 A JPH04232246 A JP H04232246A
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- Prior art keywords
- coating
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- heating
- applying
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Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 18
- 239000000956 alloy Substances 0.000 title claims abstract description 18
- 239000000203 mixture Substances 0.000 title claims abstract description 18
- 230000003647 oxidation Effects 0.000 title claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 11
- 230000002633 protecting effect Effects 0.000 title claims abstract description 5
- 229910000951 Aluminide Inorganic materials 0.000 title 1
- 238000000576 coating method Methods 0.000 claims abstract description 42
- 239000011248 coating agent Substances 0.000 claims abstract description 39
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910021324 titanium aluminide Inorganic materials 0.000 claims abstract description 21
- OQPDWFJSZHWILH-UHFFFAOYSA-N [Al].[Al].[Al].[Ti] Chemical compound [Al].[Al].[Al].[Ti] OQPDWFJSZHWILH-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000011521 glass Substances 0.000 claims abstract description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 239000005354 aluminosilicate glass Substances 0.000 claims abstract description 11
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 11
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 11
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 11
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 11
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 10
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 10
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 5
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims description 10
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 4
- 239000011253 protective coating Substances 0.000 claims description 4
- 238000007750 plasma spraying Methods 0.000 claims description 3
- 238000003980 solgel method Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims 10
- 238000005507 spraying Methods 0.000 claims 2
- 239000005368 silicate glass Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 abstract description 4
- 229910000765 intermetallic Inorganic materials 0.000 abstract description 2
- 239000000395 magnesium oxide Substances 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 4
- 229910000601 superalloy Inorganic materials 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000004626 scanning electron microscopy Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005262 decarbonization Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/02—Frit compositions, i.e. in a powdered or comminuted form
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0009—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing silica as main constituent
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Coating By Spraying Or Casting (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Glass Compositions (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
Description
【０００１】0001
【０００２】0002
【発明の分野】この発明はγ−チタン・アルミナイド合
金構造の保護に関するもので、かつさらに特定的にはこ
のような構造のための保護皮膜に関するものである。FIELD OF THE INVENTION This invention relates to the protection of gamma titanium aluminide alloy structures, and more particularly to protective coatings for such structures.
【０００３】0003
【関連技術の説明】チタン・アルミナイド金属間化合物
は、航空機システムのような進歩した構造の応用におけ
る使用として魅力がある、というのはそれらは低密度お
よび高温度強度の所望の組合せを提供するからである。
しかしながら、高温度においては、チタン・アルミナイ
ドはその低い酸化抵抗のため現在使用が非常に限定され
ている。DESCRIPTION OF RELATED ART Titanium-aluminide intermetallic compounds are attractive for use in advanced structural applications such as aircraft systems because they offer a desirable combination of low density and high temperature strength. It is. However, at high temperatures, titanium aluminide is currently of very limited use due to its low oxidation resistance.
【０００４】「超合金からつくられた試料に保護シリコ
ン含有皮膜を塗布するための方法および生産物」（”Ｐ
ｒｏｃｅｓｓ ｔｏ Ａｐｐｌｙ ａ Ｐｒｏｔｅｃｔ
ｉｎｇ Ｓｉｌｉｃｏｎ Ｃｏｎｔａｉｎｉｎｇ Ｃｏ
ａｔｉｎｇ Ｓｐｅｃｉｍｅｎ Ｐｒｏｄｕｃｅｄ Ｆ
ｒｏｍ Ｓｕｐｅｒａｌｌｏｙｓ ａｎｄ Ｐｒｏｄｕ
ｃｔ”）と題される、チューニスバン シャーイック
（Ｔｅｕｎｉｓ ｖａｎ Ｓｃｈａｉｋ ）に発行され
た、米国特許第４，３６９，２３３号は、超合金サブス
トレート（ニッケル基合金）上の使用のための腐食抵抗
皮膜を開示する。シリコン皮膜はＴｉ６ Ｓｉ７ Ｎｉ
１ ６ からなる。チタン層はイオンプレーティングに
よって塗布される。それは超合金において拡散され、シ
リコン層はパック皮膜法により塗布される。“Method and Product for Applying Protective Silicon-Containing Coatings to Specimens Made from Superalloys” (“P.
process to Apply a Protect
ing Silicon Containing Co.
ating Specimen Produced F
rom Superalloys and Produ
U.S. Pat. No. 4,369,233, issued to Teunis van Schaik, entitled ``Ct'') describes a corrosion-resistant coating for use on superalloy substrates (nickel-based alloys). Disclosed. The silicon film is Ti6 Si7 Ni
Consisting of 16. The titanium layer is applied by ion plating. It is diffused in the superalloy and the silicon layer is applied by pack coating method.
【０００５】「軽金属のためのガラス質皮膜」（”Ｖｉ
ｔｒｅｏｕｓ Ｃｏａｔｉｎｇ Ｆｏｒ Ｌｉｇｈｔ
Ｍｅｔａｌｓ” ）と題される、Ａ．Ｊ．ディラップ（
Ａ．Ｊ．Ｄｅｙｒｕｐ）に発行された、米国特許第２，
４６７，１１４号は、アルミニウムおよびアルミニウム
濃合金上に、主にＰｂＯ、ＳｉＯ２ 、およびＬｉ２
Ｏからなる、皮膜の使用を開示する。“Vitreous coating for light metals” (”Vi
Treous Coating For Light
Metals”), by A.J. Dillup (
A. J. U.S. Patent No. 2, issued to
No. 467,114 mainly uses PbO, SiO2, and Li2 on aluminum and aluminum-rich alloys.
Discloses the use of a film consisting of O.
【０００６】「保護皮膜」（”Ｐｒｏｔｅｃｔｉｖｅ
Ｃｏａｔｉｎｇ”）と題される、Ｗ．Ｒ．コランタオノ
（Ｗ．Ｒ．Ｃｏｌａｎｔｕｏｎｏ）に発行された、米国
特許第３，６９８，９４３号は、高温の金属加工部材、
特に高速度工具鋼のための保護皮膜の使用を開示する。
皮膜は、ホウ酸ナトリウム、シリカおよびアルミナのよ
うな粘性促進剤からなる。[0006] "Protective film"
U.S. Pat.
In particular, the use of protective coatings for high speed tool steels is disclosed. The coating consists of viscosity promoters such as sodium borate, silica and alumina.
【０００７】[0007]
【発明の目的および概要】この発明の主な目的は、高温
度酸化に対してγ−チタン・アルミナイド合金加工品を
保護することである。OBJECTS AND SUMMARY OF THE INVENTION The primary object of this invention is to protect gamma titanium aluminide alloy workpieces against high temperature oxidation.
【０００８】この発明のもう１つの目的は、高温度γ−
チタン・アルミナイド合金のための軽重量の保護表面皮
膜を提供することである。Another object of the present invention is to reduce the temperature of high temperature γ-
The object of the present invention is to provide a lightweight protective surface coating for titanium-aluminide alloys.
【０００９】発明のもう１つの目的は、ビレット生成に
付随する高温度におけるスケーリングおよび脱炭素に対
して要求される保護を提供し、かつさらに皮膜が塗布さ
れる時において鋳型の実質的により低い温度において加
工部材に付着する、γ−チタン・アルミナイド合金のた
めの保護皮膜を提供することである。Another object of the invention is to provide the required protection against scaling and decarbonization at the high temperatures associated with billet production, and to further reduce the substantially lower temperatures of the mold at the time the coating is applied. It is an object of the present invention to provide a protective coating for a gamma titanium aluminide alloy that adheres to a workpiece in a process.
【００１０】高温度酸化にさらされるγ−チタン・アル
ミナイド合金試料を保護するためのこの発明は、γ−チ
タン・アルミナイド試料の表面上にアルミノシリケイト
ガラス皮膜の塗布を含む。被覆された試料は、十分な時
間の間、２１５０〜２２５０°Ｆの範囲内の温度で加熱
されて、合金とガラス皮膜の間にシリサイド界面層を形
成する。The present invention for protecting gamma titanium aluminide alloy samples exposed to high temperature oxidation involves the application of an aluminosilicate glass coating over the surface of the gamma titanium aluminide sample. The coated sample is heated at a temperature within the range of 2150-2250° F. for a sufficient period of time to form a silicide interfacial layer between the alloy and the glass coating.
【００１１】ガラス皮膜は好ましくは、重量％で６０〜
６５％のＳｉＯ２ 、および重量％で１６〜２０％のＡ
ｌ２ Ｏ３ を含む組成物である。ガラス皮膜は結果的
に最小限の酸化を生じる。[0011] The glass coating preferably has a content of 60 to 60% by weight.
65% SiO2 and 16-20% A in wt%
It is a composition containing l2O3. The glass coating results in minimal oxidation.
【００１２】この発明の他の目的、利点および新しい特
徴は、添付の図面と考慮されると、発明の以下の詳細な
説明から明らかになるであろう。Other objects, advantages and novel features of the invention will become apparent from the following detailed description of the invention when considered in conjunction with the accompanying drawings.
【００１３】[0013]
この発明の実施において、ガラス皮膜はアルミノシリケ
イトを有する組成物を含む。シリカ（ＳｉＯ２ ）は好
ましくは重量％で６０〜６５％の範囲内で皮膜内に存在
する。アルミナ（Ａｌ２ Ｏ３ ）は、好ましくは重量
％で１６〜２０％の範囲内で存在する。ホウ酸（Ｂ２
Ｏ３ ）、酸化ナトリウム（Ｎａ２ Ｏ）、酸化マグネ
シウム（ＭｇＯ）、および酸化カルシウム（ＣａＯ）は
、ガラス皮膜の残物を好ましくは与える。このように、
好ましい組成物の範囲は次のように表わされることが可
能である。In the practice of this invention, the glass coating includes a composition having an aluminosilicate. Silica (SiO2) is preferably present in the coating in the range of 60-65% by weight. Alumina (Al2O3) is preferably present in the range 16-20% by weight. Boric acid (B2
O3), sodium oxide (Na2O), magnesium oxide (MgO), and calcium oxide (CaO) preferably provide the residue of the glass coating. in this way,
A preferred composition range can be expressed as follows.
【００１４】
重量パーセント
ＳｉＯ２
６０〜６５
Ａｌ２ Ｏ３
１６〜２０
Ｂ２ Ｏ３
０〜 ６
Ｎａ２ Ｏ
０〜 ２
ＭｇＯ
５〜 ８
ＣａＯ
７〜１０最適な組成物は次のように表わされる
ことが可能である。[0014]
weight percent
SiO2
60-65
Al2O3
16-20
B2 O3
0~6
Na2O
0~2
MgO
5-8
CaO
7-10 The optimal composition can be expressed as:
【００１５】
重量パーセント
ＳｉＯ２
６２
Ａｌ２ Ｏ３
１７
Ｂ２ Ｏ３
５
Ｎａ２ Ｏ３
１
ＭｇＯ
７
ＣａＯ
８
本件のガラス皮膜は好ましくは従来の噴霧技術により塗
布される。これは計測可能でかつコスト効率がよいため
好ましいとされる。しかしながら、皮膜はプラズマ溶射
またはゾルゲル法のような他の適当な方法により塗布さ
れてもよい。アルミノシリケイトガラス皮膜は０．５ミ
ル〜２ミルの厚さ、好ましくは約０．５ミルに塗布され
る。[0015]
weight percent
SiO2
62
Al2O3
17
B2 O3
5
Na2O3
1
MgO
7
CaO
8
The subject glass coatings are preferably applied by conventional spray techniques. This is preferred because it is measurable and cost effective. However, the coating may also be applied by other suitable methods such as plasma spraying or sol-gel methods. The aluminosilicate glass coating is applied to a thickness of 0.5 mil to 2 mil, preferably about 0.5 mil.
【００１６】被覆された試料は、合金とガラス皮膜の間
にシリサイド界面層を形成するため十分な時間の間加熱
されることが必要である。十分な界面層を形成するため
、試料は２１５０〜２２５０°の範囲内の温度まで加熱
するべきである。好ましくはガラス皮膜は最低限約１０
分間加熱される。（範囲は典型的には１０〜２０分間で
ある。） 高温度処理は短時間を要し、一方低温度処
理はより長い時間を要する。結果的に生ずる界面層は周
期的な酸化の後でも不変のままである。The coated sample needs to be heated for a sufficient period of time to form a silicide interfacial layer between the alloy and the glass coating. In order to form a sufficient interfacial layer, the sample should be heated to a temperature within the range of 2150-2250°. Preferably, the glass coating has a minimum thickness of about 10
Heat for minutes. (The range is typically 10-20 minutes.) High temperature treatments require a short time, while low temperature treatments require a longer time. The resulting interfacial layer remains unchanged even after periodic oxidation.
【００１７】[0017]
【実施例】１ｃｍ平方のチタン・アルミナイド試料は機
械的に洗浄された。ガラス皮膜は噴霧塗布により塗布さ
れた。EXAMPLE A 1 cm square titanium aluminide sample was mechanically cleaned. The glass coating was applied by spray application.
【００１８】チタン・アルミナイド試料は次の組成物を
有していた。
原子パーセント
Ｔｉ
４９．２
Ａｌ
４８．０
Ｎｂ
２．５
Ｔａ
０．３被覆された試料
は、コヒーレントでかつ連続的な層を得るため、その後
２１５０°Ｆの状態に１０分間におかれる。酸化実験は
その後、熱周期的な条件の下（１８００°Ｆにおいて２
時間 − 室温において２時間）で行なわれた。重
量の増加または減少が監視される。被覆されていないチ
タン・アルミナイド試料は同一の熱周期的な条件にさら
された。図において例示されるように、ガラス皮膜を伴
う試料は実質的に重量変化がまったく示されず、一方被
覆されない試料は実質的に重量減少がみられた。走査型
電子顕微鏡（ＳＥＭ）による被覆された試料の調査から
、処理の間に皮膜とチタン・アルミナイドの間に界面シ
リサイド層の形成が示され、これは周期的な酸化後も不
変の状態を維持する。ＳＥＭにより調査されたとき、皮
膜においてまたは熱周期的な条件後、亀裂は観察されな
かった。The titanium aluminide sample had the following composition:
atomic percent
Ti
49.2
Al
48.0
Nb
2.5
Ta
The 0.3 coated sample is then placed at 2150° F. for 10 minutes to obtain a coherent and continuous layer. Oxidation experiments were then carried out under thermocyclic conditions (2 at 1800°F).
time - 2 hours at room temperature). Weight gain or loss is monitored. Uncoated titanium aluminide samples were exposed to the same thermocyclic conditions. As illustrated in the figure, the samples with the glass coating showed virtually no weight change, while the uncoated samples showed substantial weight loss. Examination of the coated samples by scanning electron microscopy (SEM) shows the formation of an interfacial silicide layer between the coating and the titanium aluminide during processing, which remains unchanged even after periodic oxidation. do. No cracks were observed in the coating or after thermal cycling conditions when investigated by SEM.
【００１９】明らかに、この発明の多くの修正および変
化は上記技術に照して可能である。それゆえ、前掲の請
求項の範囲内で、発明は特定的に記述されるものとは異
なるやり方で実施されてもよい。Obviously, many modifications and variations of this invention are possible in light of the above technique. Therefore, within the scope of the following claims, the invention may be practiced otherwise than as specifically described.
【００２０】請求されかつ特許により保護されることが
望まれるのは、前掲の請求項のとおりである。What is claimed and desired protected by patent is the following claims.
【図１】この発明に従いかつ高温度熱周期的な条件にさ
らされた、ガラス皮膜で被覆されたテスト試料の重量対
時間のグラフである。FIG. 1 is a weight versus time graph of a test sample coated with a glass film according to the present invention and subjected to high temperature thermocyclic conditions.
Claims (24)
ルミナイド合金試料を保護するための方法であって、（
ａ） 前記γ−チタン・アルミナイド試料の表面上に
アルミノシリケイトガラス皮膜を塗布するステップと、
（ｂ） 前記合金と前記ガラス皮膜との間にシリサイ
ド界面層を形成するため十分な時間の間２１５０〜２２
５０°Ｆの範囲内の温度まで、被覆された試料を加熱す
るステップとを含む方法。1. A method for protecting a γ-titanium aluminide alloy sample exposed to high temperature oxidation, the method comprising:
a) applying an aluminosilicate glass coating on the surface of the γ-titanium aluminide sample;
(b) 2150-22 for a sufficient time to form a silicide interfacial layer between the alloy and the glass coating;
heating the coated sample to a temperature within the range of 50°F.
ける前記皮膜の噴霧塗布を含む、請求項１に記載の方法
。2. The method of claim 1, wherein the step of applying comprises spraying the coating onto the sample.
重量パーセント
ＳｉＯ２
６０〜６５
Ａｌ２ Ｏ３
１６〜２０
Ｂ２ Ｏ３
０〜 ６
Ｎａ２ Ｏ
０〜 ２
ＭｇＯ
５〜 ８
ＣａＯ
７〜１０を含む組成物から形成される、請求項
１に記載の方法。3. The glass film comprises:
weight percent
SiO2
60-65
Al2O3
16-20
B2 O3
0~6
Na2O
0~2
MgO
5-8
CaO
7. The method of claim 1, formed from a composition comprising 7-10.
重量パーセント
ＳｉＯ２
６２
Ａｌ２ Ｏ３
１７
Ｂ２ Ｏ３
５
Ｎａ２ Ｏ３
１
ＭｇＯ
７
ＣａＯ
８を含
む、請求項３に記載の方法。4. The composition comprises:
weight percent
SiO2
62
Al2O3
17
B2 O3
5
Na2O3
1
MgO
7
CaO
8. The method of claim 3, comprising:
０．５ミル〜２ミルの厚さに塗布される、請求項１に記
載の方法。5. The method of claim 1, wherein the aluminosilicate glass coating is applied to a thickness of 0.5 mil to 2 mil.
０．５ミルの厚さに塗布される、請求項１に記載の方法
。6. The method of claim 1, wherein the aluminosilicate glass coating is applied to a thickness of 0.5 mil.
ける前記皮膜のプラズマ溶射を含む、請求項１に記載の
方法。7. The method of claim 1, wherein the step of applying comprises plasma spraying the coating onto the sample.
り前記皮膜の塗布を含む、請求項１に記載の方法。8. The method of claim 1, wherein the step of applying comprises applying the coating by a sol-gel process.
の温度までの加熱を含む、請求項１に記載の方法。9. The step of heating is about 2150°F.
2. The method of claim 1, comprising heating to a temperature of .
低期間の加熱を含む、請求項１に記載の方法。10. The method of claim 1, wherein the step of heating includes heating for a minimum period of 10 minutes.
成するための方法であって、 （ａ） γ−チタン・アルミナイド合金試料を与える
ステップと、 （ｂ） 前記γ−チタン・アルミナイド試料の表面上
にアルミノシリケイトガラス皮膜を塗布するステップと
、（ｃ） 前記合金と前記皮膜の間にシリサイド界面
層を形成するために、十分なな時間、２１５０〜２２５
０°Ｆの範囲内の温度まで、被覆された試料を加熱する
ステップとを含む方法。11. A method for forming a component of a low density, high temperature strength structure, comprising the steps of: (a) providing a gamma titanium aluminide alloy sample; and (b) forming a gamma titanium aluminide alloy sample. (c) applying an aluminosilicate glass coating on the surface;
heating the coated sample to a temperature within the range of 0°F.
おける前記皮膜の噴霧塗布を含む、請求項１１に記載の
方法。12. The method of claim 11, wherein the step of applying comprises spraying the coating onto the sample.
重量パーセント
ＳｉＯ２
６０〜６５
Ａｌ２ Ｏ３
１６〜２０
Ｂ２ Ｏ３
０〜 ６ Ｎ
ａ２ Ｏ
０〜 ２ ＭｇＯ
５
〜 ８ ＣａＯ
７〜１
０を含む組成物から形成される、請求項１１に記載の方
法。13. The glass film comprises:
weight percent
SiO2
60-65
Al2O3
16-20
B2 O3
0~6N
a2 O
0~2 MgO
5
~8 CaO
7-1
12. The method of claim 11, wherein the method is formed from a composition comprising 0.
重量パーセント
ＳｉＯ２
６２
Ａｌ２ Ｏ３
１７
Ｂ２ Ｏ３
５
Ｎａ２ Ｏ３
１
ＭｇＯ
７
ＣａＯ
８を含
む、請求項１３に記載の方法。14. The composition comprises:
weight percent
SiO2
62
Al2O3
17
B2 O3
5
Na2O3
1
MgO
7
CaO
14. The method of claim 13, comprising:
は０．５ミル〜２ミルの厚さに塗布される、請求項１１
に記載の方法。15. The aluminosilicate glass coating is applied to a thickness of 0.5 mil to 2 mil.
The method described in.
０．５ミルの厚さに塗布される、請求項１１に記載の方
法。16. The method of claim 11, wherein the aminosilicate glass coating is applied to a thickness of 0.5 mil.
おける前記皮膜のプラズマ溶射を含む、請求項１１に記
載の方法。17. The method of claim 11, wherein the step of applying comprises plasma spraying the coating onto the sample.
による前記皮膜の塗布を含む、請求項１１に記載の方法
。18. The method of claim 11, wherein the step of applying comprises applying the coating by a sol-gel method.
Ｆの温度までの加熱をむ、請求項１１に記載の方法。19. The step of heating is about 2150°.
12. The method of claim 11, comprising heating to a temperature of F.
低期間の加熱を含む、請求項１１に記載の方法。20. The method of claim 11, wherein the step of heating includes heating for a minimum period of 10 minutes.
・アルミナイド合金上に保護皮膜としての使用のための
適当な組成物であって、前記γ−チタン・アルミナイド
合金の表面上に形成されるアルミノシリケイトガラス皮
膜を含む組成物。21. A composition suitable for use as a protective coating on a gamma titanium aluminide alloy subjected to high temperature oxidation, the composition comprising: A composition comprising a silicate glass film.
は、
重量パーセント
ＳｉＯ２
６０〜６５
Ａｌ２ Ｏ３
１６〜２０
Ｂ２ Ｏ３
０〜 ６
Ｎａ２ Ｏ
０〜 ２
ＭｇＯ
５〜 ８
ＣａＯ
７〜１０を含む組成物から形成される、請求項
２１に記載の組成物。22. The aluminosilicate glass film comprises:
weight percent
SiO2
60-65
Al2O3
16-20
B2 O3
0~6
Na2O
0~2
MgO
5-8
CaO
22. The composition of claim 21, formed from a composition comprising 7-10.
は、
重量パーセント
ＳｉＯ２
６２
Ａｌ２ Ｏ３
１７
Ｂ２ Ｏ３
５
Ｎａ２ Ｏ３
１
ＭｇＯ
７
ＣａＯ
８を含
む、請求項２２に記載の組成物。23. The aluminosilicate glass film comprises:
weight percent
SiO2
62
Al2O3
17
B2 O3
5
Na2O3
1
MgO
7
CaO
23. The composition of claim 22, comprising: 8.
金サブストレートと、 （ｂ） 前記サブストレート上に形成されるアルミノ
シリケイトガラス皮膜とを含む、金属間、低密度、高強
度構造の成分。24. A component of an intermetallic, low density, high strength structure comprising: (a) a gamma titanium aluminide alloy substrate; and (b) an aluminosilicate glass coating formed on the substrate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/558,945 US5118581A (en) | 1990-07-26 | 1990-07-26 | Protection of gamma titanium aluminides with aluminosilicate coatings |
| US558945 | 2000-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04232246A true JPH04232246A (en) | 1992-08-20 |
Family
ID=24231636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3186200A Withdrawn JPH04232246A (en) | 1990-07-26 | 1991-07-25 | Method and composition for protecting alpha-aluminide alloy sample to be exposed to high temperature oxidation |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5118581A (en) |
| EP (1) | EP0498028B1 (en) |
| JP (1) | JPH04232246A (en) |
| DE (1) | DE69110267T2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0414458A1 (en) * | 1989-08-21 | 1991-02-27 | Corning Incorporated | Glass-ceramic coatings for titanium aluminide surfaces |
| US5807430A (en) * | 1995-11-06 | 1998-09-15 | Chemat Technology, Inc. | Method and composition useful treating metal surfaces |
| DE19542808A1 (en) * | 1995-11-16 | 1996-08-14 | Siemens Ag | Vitreous coating of substrate by spraying |
| US5776617A (en) * | 1996-10-21 | 1998-07-07 | The United States Of America Government As Represented By The Administrator Of The National Aeronautics And Space Administration | Oxidation-resistant Ti-Al-Fe alloy diffusion barrier coatings |
| GB9821748D0 (en) * | 1998-10-07 | 1998-12-02 | Rolls Royce Plc | A titanium article having a protective coating and a method of applying a protective coating to a titanium article |
| US6823698B2 (en) * | 2000-12-22 | 2004-11-30 | Johns Manville International, Inc. | Rotary fiberization spinner disc |
| WO2004070076A1 (en) * | 2003-01-28 | 2004-08-19 | Tosoh Corporation | Corrosion-resistant member and method for producing same |
| US8497757B2 (en) | 2006-04-26 | 2013-07-30 | Kulite Semiconductor Products, Inc. | Method and apparatus for preventing catastrophic contact failure in ultra high temperature piezoresistive sensors and transducers |
| US20070254796A1 (en) * | 2006-04-26 | 2007-11-01 | Kurtz Anthony D | Method and apparatus for preventing catastrophic contact failure in ultra high temperature piezoresistive sensors and transducers |
| JP6394475B2 (en) * | 2015-04-13 | 2018-09-26 | 新日鐵住金株式会社 | Titanium member and manufacturing method thereof |
| CN109750251A (en) * | 2019-01-18 | 2019-05-14 | 太原理工大学 | A method of Ni coating is prepared in Ti-45Al-8.5Nb alloy surface |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2467114A (en) * | 1943-01-08 | 1949-04-12 | Du Pont | Vitreous coatings for light metals |
| US3088201A (en) * | 1959-08-26 | 1963-05-07 | Gen Electric | Method of making a ceramic-to-metal seal |
| GB1309635A (en) * | 1969-03-31 | 1973-03-14 | Sharp D H | Reservoir apparatus |
| GB1362948A (en) * | 1970-05-12 | 1974-08-07 | Radiation Ltd | Protective coatings |
| US3698943A (en) * | 1970-09-03 | 1972-10-17 | Crucible Inc | Protective coating |
| US4172922A (en) * | 1977-08-18 | 1979-10-30 | Trw, Inc. | Resistor material, resistor made therefrom and method of making the same |
| NL7807798A (en) * | 1978-07-21 | 1980-01-23 | Elbar Bv | METHOD FOR APPLYING A PROTECTIVE SILICONE COATING ON ARTICLES MADE FROM SUPER ALLOYS |
| JPS5922399B2 (en) * | 1981-10-14 | 1984-05-26 | 日本電気株式会社 | multilayer ceramic substrate |
| US4921738A (en) * | 1988-12-09 | 1990-05-01 | The United States Of America As Represented By The United States Department Of Energy | Li2 O-Al2 O3 -SiO2 glass ceramic-aluminum containing austenitic stainless steel composite body and a method of producing the same |
| EP0414458A1 (en) * | 1989-08-21 | 1991-02-27 | Corning Incorporated | Glass-ceramic coatings for titanium aluminide surfaces |
-
1990
- 1990-07-26 US US07/558,945 patent/US5118581A/en not_active Expired - Fee Related
-
1991
- 1991-07-08 DE DE69110267T patent/DE69110267T2/en not_active Expired - Fee Related
- 1991-07-08 EP EP91111345A patent/EP0498028B1/en not_active Expired - Lifetime
- 1991-07-25 JP JP3186200A patent/JPH04232246A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE69110267D1 (en) | 1995-07-13 |
| US5118581A (en) | 1992-06-02 |
| EP0498028B1 (en) | 1995-06-07 |
| EP0498028A1 (en) | 1992-08-12 |
| DE69110267T2 (en) | 1996-03-07 |
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